我尝试了不同的方法，但仍无法找到解决方案。
我需要使用带有字段（标题，说明和2图像）的表单上传图像。
我的系统使用CodeIgniter的csrf。我使用这个简单的第三方文件上传器（http://jasny.github.io/bootstrap）fileinput.js
var Fileinput = function (element, options) {
this.$element = $(element)
this.$input = this.$element.find(':file')
if (this.$input.length === 0) return
this.name = this.$input.attr('name') || options.name
this.$hidden = this.$element.find('input[type=hidden][name="' + this.name + '"]')
if (this.$hidden.length === 0) {
this.$hidden = $('<input type="hidden">').insertBefore(this.$input)
}
this.$preview = this.$element.find('.fileinput-preview')
var height = this.$preview.css('height')
if (this.$preview.css('display') !== 'inline' && height !== '0px' && height !== 'none') {
this.$preview.css('line-height', height)
}
this.original = {
exists: this.$element.hasClass('fileinput-exists'),
preview: this.$preview.html(),
hiddenVal: this.$hidden.val()
}
this.listen()
}
Fileinput.prototype.listen = function() {
this.$input.on('change.bs.fileinput', $.proxy(this.change, this))
$(this.$input[0].form).on('reset.bs.fileinput', $.proxy(this.reset, this))
this.$element.find('[data-trigger="fileinput"]').on('click.bs.fileinput', $.proxy(this.trigger, this))
this.$element.find('[data-dismiss="fileinput"]').on('click.bs.fileinput', $.proxy(this.clear, this))
},
Fileinput.prototype.change = function(e) {
var files = e.target.files === undefined ? (e.target && e.target.value ? [{ name: e.target.value.replace(/^.+\\/, '')}] : []) : e.target.files
e.stopPropagation()
if (files.length === 0) {
this.clear()
return
}
this.$hidden.val('')
this.$hidden.attr('name', '')
this.$input.attr('name', this.name)
var file = files[0]
if (this.$preview.length > 0 && (typeof file.type !== "undefined" ? file.type.match(/^image\/(gif|png|jpeg)$/) : file.name.match(/\.(gif|png|jpe?g)$/i)) && typeof FileReader !== "undefined") {
var reader = new FileReader()
var preview = this.$preview
var element = this.$element
reader.onload = function(re) {
var $img = $('<img>')
$img[0].src = re.target.result
files[0].result = re.target.result
element.find('.fileinput-filename').text(file.name)
// if parent has max-height, using `(max-)height: 100%` on child doesn't take padding and border into account
if (preview.css('max-height') != 'none') $img.css('max-height', parseInt(preview.css('max-height'), 10) - parseInt(preview.css('padding-top'), 10) - parseInt(preview.css('padding-bottom'), 10) - parseInt(preview.css('border-top'), 10) - parseInt(preview.css('border-bottom'), 10))
preview.html($img)
element.addClass('fileinput-exists').removeClass('fileinput-new')
element.trigger('change.bs.fileinput', files)
}
reader.readAsDataURL(file)
} else {
this.$element.find('.fileinput-filename').text(file.name)
this.$preview.text(file.name)
this.$element.addClass('fileinput-exists').removeClass('fileinput-new')
this.$element.trigger('change.bs.fileinput')
}
},
Fileinput.prototype.clear = function(e) {
if (e) e.preventDefault()
this.$hidden.val('')
this.$hidden.attr('name', this.name)
this.$input.attr('name', '')
//ie8+ doesn't support changing the value of input with type=file so clone instead
this.$input.val('')
this.$preview.html('')
this.$element.find('.fileinput-filename').text('')
this.$element.addClass('fileinput-new').removeClass('fileinput-exists')
if (e !== undefined) {
this.$input.trigger('change')
this.$element.trigger('clear.bs.fileinput')
}
},
Fileinput.prototype.reset = function() {
this.clear()
this.$hidden.val(this.original.hiddenVal)
this.$preview.html(this.original.preview)
this.$element.find('.fileinput-filename').text('')
if (this.original.exists) this.$element.addClass('fileinput-exists').removeClass('fileinput-new')
else this.$element.addClass('fileinput-new').removeClass('fileinput-exists')
this.$element.trigger('reset.bs.fileinput')
},
Fileinput.prototype.trigger = function(e) {
this.$input.trigger('click')
e.preventDefault()
}
// FILEUPLOAD PLUGIN DEFINITION
// ===========================
var old = $.fn.fileinput
$.fn.fileinput = function (options) {
return this.each(function () {
var $this = $(this),
data = $this.data('bs.fileinput')
if (!data) $this.data('bs.fileinput', (data = new Fileinput(this, options)))
if (typeof options == 'string') data[options]()
})
}
$.fn.fileinput.Constructor = Fileinput
// FILEINPUT NO CONFLICT
// ====================
$.fn.fileinput.noConflict = function () {
$.fn.fileinput = old
return this
}
// FILEUPLOAD DATA-API
// ==================
$(document).on('click.fileinput.data-api', '[data-provides="fileinput"]', function (e) {
var $this = $(this)
if ($this.data('bs.fileinput')) return
$this.fileinput($this.data())
var $target = $(e.target).closest('[data-dismiss="fileinput"],[data-trigger="fileinput"]');
if ($target.length > 0) {
e.preventDefault()
$target.trigger('click.bs.fileinput')
}
});
现在这是我的表格：
<form id="default_form" onsubmit="return false;" data-method="websites" enctype="multipart/form-data" data-toastr-position="top-right" data-success="Sent! Thank you!" class="validate" novalidate="novalidate">
<input type="hidden" name="{$my_csrf_name}" id="csrf" value="{$my_csrf_value}" />
<input type="text" class="form-control required" value="" name="d[DEF_TITLE]" id="MY_TITLE">
<textarea class="form-control required" rows="3" name="d[MY_DESC]" id="MY_DESC"></textarea>
<div class="fileinput fileinput-new" data-provides="fileinput">
<div class="fileinput-new thumbnail" style="min-width: 160px; min-height: 100px; max-width: 200px; max-height: 150px; line-height: 10px;"> <img src="{$_homeurl}space/perm/img/favicon/{$set_data.MY_FAVICON}" alt="{$homeurl}space/perm/img/favicon/{$set_data.MY_FAVICON}" data-src="{$homeurl}space/perm/img/favicon/{$set_data.MY_FAVICON}" > </div>
<div class="fileinput-preview fileinput-exists thumbnail" style="max-width: 200px; max-height: 150px;"></div>
<div>
<span class="btn btn-default btn-file" class="upload-image">
<span class="fileinput-new">Select Favicon image</span>
<span class="fileinput-exists">Change</span>
<input type="file" id="MY_FAVICON" name="d[MY_FAVICON]"></span>
<a href="#" class="btn btn-default fileinput-exists" data-dismiss="fileinput">Remove</a>
</div>
</div>
<button id="submit_form" data-fid="default_form" class="btn btn-3d btn-primary btn-xlg btn-block margin-top-30" type="submit">
SUBMIT
</button>
</form>
现在单击“选择Favicon图像”，这是我的js代码事件：
var csrf_val = $('#csrf').val();
var csfrData = {};
csfrData['csrf_name'] = csrf_val;
sendFile(this.files[0]);
function sendFile(file) {
$(function() {
$.ajaxSetup({
data: csfrData
});
});
$.ajax({
method: 'post',
url: _admin_url + _curr_mod+'/procedure/uload-image',
data: file,
success: function() {
alert('upload is ok!');
},
processData: false
});
}
在选择图像时，JavaScript将处理以在PHP控制器/模型中上传图像。当我试着查看Firebug时，帖子有这个值：
ÿØÿà�JFIF������ÿÛ��
然后在CodeIgniter中找到的响应选项卡中（这可能是因为csrf未包含在发布数据中）：
An Error Was Encountered
The action you have requested is not allowed.
并且对于php将只使用此代码（仍不确定我将如何在php中处理它）：
$_FILES['file']
我不知道如何使用上传器（具有文件预览）和CodeIgniter中的csrf上传图像。
过程是这样的，在选择图像后，ajax会将其上传到服务器（临时文件夹），并返回一个新的文件名（在php上传时启用加密）